Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
  • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
  • F24F13/082—Grilles, registers or guards
  • F24F13/084—Grilles, registers or guards with mounting arrangements, e.g. snap fasteners for mounting to the wall or duct
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
  • F24F13/02—Ducting arrangements
  • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
  • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F7/00—Ventilation
  • F24F2007/0025—Ventilation using vent ports in a wall

Definitions

• the present invention concerns a vent device, according to the preamble of claim 1.
• the invention also concerns a vent unit being included in such a vent device.
• vent devices for providing air discharge from a space inside a building typically includes a ventilation pipe, which debouches in a wall, for example in a kitchen or in a wet space, said pipe terminating with a pipe portion. Inside this pipe portion a vent unit is fastened, having means for engagement with a pipe portion, whereby spring acting support loops or hook plates could be mentioned.
• the vent unit has a conical portion, which comprises a conduit portion and a valve body, ' which is axially movable with respect to the conical portion.
• Adjustment of the valve body in an axial direction results, in a higher or lower degree of throttling the vent unit .
• the valve body may be adjustable over external manoeuvring means allowing adjustment with the vent unit in position, or simply be carried by the screw, which means that the vent unit must be taken out from its position in order to be adjusted.
• Vent devices of today suffer from disadvantages because they are complicated to install, and in certain cases also to remove.
• the known mounting elements, support loops and hook plates often provide insecure fastenings that are difficult to handle and sometimes, again, vent units that are stuck in place risk damaging surrounding details when they are to be removed. Further, today's vent devices demand assembly of plural details and are therefor ⁇ relatively expensive.
• vent device which is simple to manufacture, easily handled and easily mounted.
• snap-lock means and snap-lock- elements simple production of the vent unit as well as the pipe portion is enabled.
• safe engagement between the details may be achieved using means that are easily produced. This results in the possibility of safe and easy establishment of the engagement as well as loosening of this engagement.
• the vent housing is a plastic detail and that the snap-lock means are integrated on the outside of the conduit portion.
• the snap-lock means are discrete means, which are distributed in the circumference direction over the conduit portion, and which co-operate with snap-lock elements, which are equally discrete elements arranged with a certain mutual distance.
• a plural (at least two) snap- lock means are arranged separated in the inserting direction so as to allow locking with different degree of insertion of the vent housing with respect to the pipe portion.
• a further advantage with constructing the snap-lock means such that alternative fastening in the insertion direction is allowed is that tolerance demands in manufacture of the parts does not have to be very great, since the desired engagement is possible to obtain also if there is a certain dimensional deviation. This is an important advantage with locks of the kind used here.
• the pipe portion has a sealing lip which in the inserted position of the vent housing engages and seals against the outside of the conduit portion.
• the sealing lip is an essentially axially directed integral part of the pipe portion. This enhances manufacturing friendliness and economy and simplifies assembly of the device. Further, there is no risk of forgetting an essential element when assembling, which could otherwise result in leaking air currents. This solution further provides a safe seal, which is not dependent on the engagement of the vent unit against in building inner wall .
• Fig. la shows in an axial section a part of a vent unit according to the invention
• Fig. lb shows the part in Fig. la in a view from the right, as seen in Fig. la,
• Fig. 2a shows a pipe portion being included in a device _5_ according to the invention in an axial section
• Fig. 2b shows the pipe portion of Fig. 2a in view from the left, as seen in Fig. 2a,
• FIG. 3 shows a device according to the invention in an assembled, mounted state
• Figs. 4a and 4b show in detail the region of the snap-lock and the seal between a vent unit and a pipe portion according to., 15 the invention.
• Fig. la number 1 depicts a vent housing of a vent unit, which is included in a device according to the invention.
• the 0 vent housing 1 includes an essentially conical conduit portion 2, which is intended to be inserted into a pipe portion, and an outside portion 3 which is intended to lie against an inner wall, a roof panel or the like with its rear surface 31.
• the vent housing 1 is 5 provided with a number of locking knobs 4 which comprise snap- lock means, and which are intended to co-operate with corresponding elements in a pipe portion in a way that will be described later.
• the vent housing 1 includes guiding wings 5 having 0 an axially directed guiding surface for guidance into said pipe portion, and having an oblique surface 5' corresponding to the cone angle of the conduit portion 2.
• the vent housing 1 further has a support 6 for a valve body, 5 which is not shown here, and which completes the vent housing so as to form a vent unit .
• the support 6 has a central thread and a number, here three, (see Fig. lb) holder arms. A not shown valve body having a threaded stem may thus be screwed into the support 6 so that an adjusted throttling of the air L0 is achieved through the resulting vent unit.
• Fig. lb the vent housing is seen from the right in Fig. la wherein the snap-lock means 4 are shown, here shown separated into two groups, 4a and 4b.
• L5 or locking knobs 4a are positioned on a smaller radius and thereby at a shorter distance from the thin end of the conduit portion, the end to the right in Fig. la.
• the second group snap-lock means or locking knobs 4b are thus positioned axially at a greater distance from the thin end of the conduit
• FIG. lb supports 7 for insertion of hook plates for conventional insertion of a vent unit having a vent housing 1 50 in a conventional pipe portion is also shown.
• FIG. 2a 8 concerns a pipe portion for insertion into a ventilation channel, which is intended to open in a space inside a building.
• the pipe portion 8 includes a tubular connection portion and a flange 9 for lying against the mouth 5 side of the wall. Over its end side the flange 9 is provided with distributed protective ears 10 having such an axial extension that they protrude outside the sealing lip 11.
• the protected ears 10 also function as handling aids for a person mounting the pipe portion into a wall.
• the sealing lip 11 L0 which is comprised of a thin, ring-shaped protruding portion is intended, in use, to sealingly engage the conduit portion of the valve housing, and in particular the outside thereof, above the- snap-lock means 4a, b (see Fig. la and lb) .
• the pipe portion 8 is further provided with an entering ⁇ chamfer 12 on its inner side, inside said sealing lip 11, which entering chamfer 12 axially inwards transforms to snap- lock elements 13 in the form of a distributed, circumferentially positioned snap-lock edge. This edge is
• the locking edge is, however, interrupted at 14 of a number of distributed free areas, which as a regards width, number and distribution corresponds to the locking knobs 4a, b of the vent housing.
• FIG. 30 The parts of the pipe portion are shown in greater detail in Fig. 2b with the distributed protective ears 10 on the axial surface of the flange 9 and the position of the free areas 14 over the inside of the pipe portion 8.
• Fig. 3 the device according to the invention is shown in an assembled state, having the vent housing shown inserted into the end of the pipe portion 8, and with the sealing lip 11 sealingly engaging the outside of the conduit portion 2 of the vent unit.
• a locking ring 15 is in the shown assembly used to provide an application force at the rear side of a panel into which the pipe portion 8 is inserted.
• the pipe portion has a number of shallow, axial ridges distributed over the outside of its tubular portion.
• the pipe portion may of course also be plastered into an integrated ventilation channel in a wall.
• a valve body 17 is arranged axially moveable in the vent unit.
• FIGs. 4a, b the engagement area between the vent unit and the pipe portion is shown in an enlarged scale.
• Fig. 4a concerns the engagement of the snap-lock element with a locking knob from the first group, 4a.
• Fig. 4b concerns the engagement of the snap-lock element 13 with a locking knob from the second group 4b.
• the sealing engagement of the sealing lip 11 against the outside of the conduit portion 2 is also shown.
• the snap-lock means and the snap elements may be constructed inverted, with the means made as recessed portions and the elements as protruding ' portions instead of what is shown.
• the snap-lock means may be constructed differently, for example as continuous circumference means and edges. In that case, however, the design must be such that loosening between the details may be achieved without the possibility of rotating one of the parts in order to achieve freeing from the snap engagement .
• the vent device is here described as an air discharged device, but it should be understood that use as an air supply device is within the scope of this invention.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Building Environments (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)
• Ventilation (AREA)
• Valve Housings (AREA)
• Lift Valve (AREA)
• Filling Or Discharging Of Gas Storage Vessels (AREA)
• Self-Closing Valves And Venting Or Aerating Valves (AREA)
• Duct Arrangements (AREA)
• Central Air Conditioning (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20281781

Family Applications (1)

Country Status (7)

Cited By (2)

Citations (4)

• 2000
  • 2000-11-10 SE SE0004126A patent/SE522738C2/sv unknown
• 2001
  • 2001-11-09 AU AU2002212942A patent/AU2002212942A1/en not_active Abandoned
  • 2001-11-09 AT AT01981287T patent/ATE301270T1/de not_active IP Right Cessation
  • 2001-11-09 DE DE60112467T patent/DE60112467T2/de not_active Expired - Lifetime
  • 2001-11-09 EP EP01981287A patent/EP1332321B1/en not_active Expired - Lifetime
  • 2001-11-09 WO PCT/SE2001/002488 patent/WO2002039026A1/en not_active Application Discontinuation
• 2003
  • 2003-04-29 NO NO20031950A patent/NO318414B1/no not_active IP Right Cessation

Patent Citations (4)

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